1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011f681bd62faf1097d883c61fbb126719a7ee9e03bfde45d6e6370910e503e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4913bb9f-e785-432d-a7e1-80ce40578894.json and https://artists.proofprofile.net/proofs/artist/4913bb9f-e785-432d-a7e1-80ce40578894.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
宮崎駿の世界 (クラシックギターの調べ)
となりのトトロ（「となりのトトロ」より）
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7662f16636a0455dc3ded2930151deb1cf57da5ff7444e1ab477759689b321d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a7952bbe35952bc4740fd1bef96f1f36534c18909efc5e6d8dc9b715ad1e4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100165.
風のとおり道（「となりのトトロ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513d9c2ff35a8e629f7e8e23e0a0a4cb2f981787c84905872eda3cb8b2157204. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12e000bcadc4890b8da88227e164984d0bb7926867a0c491df39a459cfd425b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100167.
君をのせて（「天空の城ラピュタ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10afc110d35e6757bd8e26260a08b24b3cfbbd386d16af5ee265f08c510dfd57. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65503380078b54c674ed358f5a4d87dc1d6759df79c6d38edd6e48f1189ed3e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100169.
ハトと少年（「天空の城ラピュタ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c65b072abc998c99b8345dcc65962654c79f8d00c05d0a49f2fb305ec57a3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100170.
失われた楽園（「天空の城ラピュタ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c0a5e2c6038a1d552bebcf736230ef55cce4e259750b2af20efb65c9a50e86. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100171.
ゴンドアの思い出（「天空の城ラピュタ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c0e552ad95e65667a900c5841be27389126ed26e1ecf9802249be4b8f48e8f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100172.
風の谷のナウシカ～オープニング・テーマ（「風の谷のナウシカ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6011cb842d1fd8d0d76a57056f9975d4646e4e7cd364fb12c2cd1e8080eb0ff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100173.
ナウシカ・レクイエム（「風の谷のナウシカ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c6b54bc43ca28c37f77006415dce8ad7e2a2678195109b207fd131851160cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fa66b3740ad1e0e35161002d4b95ac2a3bf7cfe1efc4b7c9799de56c060195. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100175.
風の谷のナウシカ～シンボル・テーマ・ソング（「風の谷のナウシカ」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97596f9bdfa08286a5003cdf695884df79138c153bb17156dcdb053198499d86. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80659012a3004fbff48cd3d6ce436401cc7027cbd2aa2c0f9f9cc1270f6e7d7e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb71d24a3f30df5ae61e4dcf89101aead7c9221e098b68a48eca940011aabf. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8466a94350445bccc09d98f95e65a8d2118e8114810c66d404d7fa130e40888. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100179.
元気になれそう（「魔女の宅急便」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad644f2e5a0906647761765b4884d49b679f061c408e3eab847bd45a64d7b3f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100180.
世界って広いわ（「魔女の宅急便」より）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c704722e44991aa4e2a7bcec4ef206c98de571cd0ce48f06004af9365c4193b. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7cc3c00702b84fa443d088c429e36bf0fe0f6a6cf78f2ffca7d7f1af3cb80d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641100182.
ひとりで楽しむクリスマスソング (クラシック・ギター)
ジブリの世界 クラシックギターの調べ
ギターソロ ボサノバ・ベスト～イパネマの娘
ギターソロ 永遠のベストソング～スターダスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb476a8db6a6e3598f0a4d78565a4e97cb70028fbd7f5cd93e29aba6801c07a0. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bed2d887008f57df81b4ad79cfe7a1f151e070d35748a5af6ae5e5120820909. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd94206befdf7cb854047cd79c0cfc9857efa5bb7ddb16f7f407a6f93c26eae. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab5b1500390c6c64f94b56a08bae850844e9ac7b11551ba8bc1c56afed6d929. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc06106696dd6a3f3c415987d3209f7e011f129d158933a06182735e6a1415. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2082a3c291dacd773c459cb738e7439847b9a656ac60f306ad209cb995bf05dd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fe5133d85a26b4fba54acd15c0ef0e35adea8d97494b29ce2d9a6d9d33ecd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE641300186.
ギターソロ 懐かしの映画音楽ベスト～慕情